implement kpod rename

rename a container

Signed-off-by: Ryan Cole <rcyoalne@gmail.com>

cmd/kpod/rename.go

@@ -0,0 +1,45 @@
+package main
+
+import (
+	"github.com/kubernetes-incubator/cri-o/libkpod"
+	"github.com/pkg/errors"
+	"github.com/urfave/cli"
+)
+
+var (
+	renameDescription = "Rename a container.  Container may be created, running, paused, or stopped"
+	renameFlags       = []cli.Flag{}
+	renameCommand     = cli.Command{
+		Name:        "rename",
+		Usage:       "rename a container",
+		Description: renameDescription,
+		Action:      renameCmd,
+		ArgsUsage:   "CONTAINER NEW-NAME",
+		Flags:       renameFlags,
+	}
+)
+
+func renameCmd(c *cli.Context) error {
+	if len(c.Args()) != 2 {
+		return errors.Errorf("Rename requires a src container name/ID and a dest container name")
+	}
+
+	config, err := getConfig(c)
+	if err != nil {
+		return errors.Wrapf(err, "Could not get config")
+	}
+	server, err := libkpod.New(config)
+	if err != nil {
+		return errors.Wrapf(err, "could not get container server")
+	}
+	err = server.Update()
+	if err != nil {
+		return errors.Wrapf(err, "could not update list of containers")
+	}
+
+	err = server.ContainerRename(c.Args().Get(0), c.Args().Get(1))
+	if err != nil {
+		return errors.Wrapf(err, "could not rename container")
+	}
+	return nil
+}